您可以从使用过滤器开始,该过滤器首先涵盖身份验证和权限管理。
通过实现ResourceFilter和ContainerRequestFilter,您可以获得httpRequest,然后会话将应用程序/请求重定向到相关方法。
对于权限管理,可以实现SecurityContext筛选器。必须首先检查isUserInRole才能让请求进入方法。
下面是SecurityContext实现的示例:
public class SecurityContextImpl implements SecurityContext {
private final SessionUser user;
public SecurityContextImpl(SessionUser user) {
this.user = user;
}
public Principal getUserPrincipal() {
return user;
}
public boolean isUserInRole(String role) {
if(user == null) {
throw new AuthenticationException();
}
if(ObjectUtil.isNull(user.getPrivileges())){
throw new AuthenticationException();
}
if(!user.getPrivileges().contains(role)) {
throw new InvalidAuthorizationHeaderException();
}
return user.getPrivileges().contains(role);
}
public boolean isSecure() {
return false;
}
public String getAuthenticationScheme() {
return SecurityContext.BASIC_AUTH;
}
}
下面是基本的SecurityContextFilter实现:
public class SecurityContextFilter implements ResourceFilter, ContainerRequestFilter {
private static final Logger LOG = LoggerFactory.getLogger(SecurityContextFilter.class);
protected static final String HEADER_AUTHORIZATION = "Authorization";
protected static final String HEADER_DATE = "x-java-rest-date";
protected static final String HEADER_NONCE = "nonce";
private HttpServletRequest httpRequest;
public SecurityContextFilter() {
}
public ContainerRequest filter(ContainerRequest request) {
SessionUser sessionUser = (SessionUser) httpRequest
.getSession()
.getAttribute("sessionUser");
request.setSecurityContext(new SecurityContextImpl(sessionUser));
return request;
}
public ContainerRequestFilter getRequestFilter() {
return this;
}
public ContainerResponseFilter getResponseFilter() {
return null;
}
public HttpServletRequest getHttpRequest() {
return httpRequest;
}
public void setHttpRequest(HttpServletRequest httpRequest) {
this.httpRequest = httpRequest;
}
}
不要忘记将过滤器作为init param放入web.xml中,
然后可以使用角色权限验证逻辑处理请求。